Algebra I

The area of a rectangular swimming pool is given by 5x^2-31x-28ft^2. One side length of the pool is given by 5x + 4 feet. What is an algebraic expression for the other side length of the pool?

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asked by Terri
  1. Area of a rectangle = length * width
    therefore:
    5x^2-31x-28 = (5x + 4)* the other side
    or
    The other side
    = (5x^2-31x-28)/(5x+4)
    = (5x+4)(x-7) /(5x+4)
    = x-7

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